qt: drop Qt Network and Qt OpenSSL deps, use epee library instead

monero-wallet-gui.pro

@@ -43,7 +43,9 @@ INCLUDEPATH +=  $$WALLET_ROOT/include \
                 $$PWD/src/libwalletqt \
                 $$PWD/src/QR-Code-generator \
                 $$PWD/src \
-                $$WALLET_ROOT/src
+                $$WALLET_ROOT/src \
+                $$WALLET_ROOT/external/easylogging++ \
+                $$WALLET_ROOT/contrib/epee/include
 
 HEADERS += \
     src/main/filter.h \
@@ -372,11 +374,18 @@ macx {
     #     LIBS+= -Wl,-Bstatic
     # }
 
-    OPENSSL_LIBRARY_DIRS = $$system(brew --prefix openssl, lines, EXIT_CODE)
+    OPENSSL_DIR = $$system(brew --prefix openssl, lines, EXIT_CODE)
+    !equals(EXIT_CODE, 0) {
+        OPENSSL_DIR = /usr/local/ssl
+    }
+    OPENSSL_LIBRARY_DIR = $$OPENSSL_DIR/lib
+    INCLUDEPATH += $$OPENSSL_DIR/include
+
+    BOOST_DIR = $$system(brew --prefix boost, lines, EXIT_CODE)
     equals(EXIT_CODE, 0) {
-        OPENSSL_LIBRARY_DIRS = $$OPENSSL_LIBRARY_DIRS/lib
+        INCLUDEPATH += $$BOOST_DIR/include
     } else {
-        OPENSSL_LIBRARY_DIRS = /usr/local/ssl/lib
+        INCLUDEPATH += /usr/local/include
     }
 
     QT += macextras
@@ -386,7 +395,7 @@ macx {
     LIBS+= -Wl,-bind_at_load
     LIBS+= \
         -L/usr/local/lib \
-        -L$$OPENSSL_LIBRARY_DIRS \
+        -L$$OPENSSL_LIBRARY_DIR \
         -L/usr/local/opt/boost/lib \
         -lboost_serialization \
         -lboost_thread-mt \

src/CMakeLists.txt

@@ -97,6 +97,8 @@ file(GLOB_RECURSE SRC_HEADERS *.h)
 target_include_directories(monero-gui PUBLIC
 	${CMAKE_SOURCE_DIR}/monero/include
     ${CMAKE_SOURCE_DIR}/monero/src
+    ${CMAKE_SOURCE_DIR}/monero/external/easylogging++
+    ${CMAKE_SOURCE_DIR}/monero/contrib/epee/include
 	${CMAKE_CURRENT_SOURCE_DIR}
 	${CMAKE_CURRENT_SOURCE_DIR}/daemon
 	${CMAKE_CURRENT_SOURCE_DIR}/libwalletqt

src/main/main.cpp

@@ -30,7 +30,6 @@
 #include <QQmlApplicationEngine>
 #include <QtQml>
 #include <QStandardPaths>
-#include <QNetworkAccessManager>
 #include <QIcon>
 #include <QDebug>
 #include <QDesktopServices>
@@ -437,8 +436,7 @@ int main(int argc, char *argv[])
 #endif
     engine.rootContext()->setContextProperty("builtWithScanner", builtWithScanner);
 
-    QNetworkAccessManager *manager = new QNetworkAccessManager();
-    Prices prices(manager);
+    Prices prices;
     engine.rootContext()->setContextProperty("Prices", &prices);
 
     // Load main window (context properties needs to be defined obove this line)

src/qt/prices.cpp

@@ -26,85 +26,85 @@
 // STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
 // THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+#include <QDebug>
 #include <QtCore>
-#include <QNetworkAccessManager>
+
+// TODO: wallet_merged - epee library triggers the warnings
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wunused-parameter"
+#pragma GCC diagnostic ignored "-Wreorder"
+#include <net/http_client.h>
+#pragma GCC diagnostic pop
 
 #include "utils.h"
 #include "prices.h"
 
-
-Prices::Prices(QNetworkAccessManager *networkAccessManager, QObject *parent)
-    : QObject(parent) {
-    this->m_networkAccessManager = networkAccessManager;
+Prices::Prices(QObject *parent)
+    : QObject(parent)
+    , m_scheduler(this)
+{
 }
 
-void Prices::getJSON(const QString url) {
+void Prices::getJSON(const QString url) const
+{
     qDebug() << QString("Fetching: %1").arg(url);
-    QNetworkRequest request;
-    request.setUrl(QUrl(url));
-    request.setRawHeader("User-Agent", randomUserAgent().toUtf8());
-    request.setRawHeader("Content-Type", "application/json");
-
-    m_reply = this->m_networkAccessManager->get(request);
-
-    connect(m_reply, SIGNAL(finished()), this, SLOT(gotJSON()));
-}
-
-void Prices::gotJSON() {
-    // Check connectivity
-    if (!m_reply || m_reply->error() != QNetworkReply::NoError){
-        this->gotError("Problem with reply from server. Check connectivity.");
-        m_reply->deleteLater();
-        return;
-    }
-
-    // Check json header
-    QList<QByteArray> headerList = m_reply->rawHeaderList();
-    QByteArray headerJson = m_reply->rawHeader("Content-Type");
-    if(headerJson.length() <= 15){
-        this->gotError("Bad Content-Type");
-        m_reply->deleteLater();
-        return;
-    }
-
-    QString headerJsonStr = QTextCodec::codecForMib(106)->toUnicode(headerJson);
-    int _contentType = headerList.indexOf("Content-Type");
-    if (_contentType < 0 || !headerJsonStr.startsWith("application/json")){
-        this->gotError("Bad Content-Type");
-        m_reply->deleteLater();
-        return;
-    }
-
-    // Check valid json document
-    QByteArray data = m_reply->readAll();
-    QJsonDocument doc = QJsonDocument::fromJson(data);
-    QString jsonString = doc.toJson(QJsonDocument::Indented);
-    if (jsonString.isEmpty()){
-        this->gotError("Bad JSON");
-        m_reply->deleteLater();
-        return;
-    }
-
-    // Insert source url for later reference
-    QUrl url = m_reply->url();
-    QJsonObject docobj = doc.object();
-    docobj["_url"] = url.toString();
-    doc.setObject(docobj);
-
-    qDebug() << QString("Fetched: %1").arg(url.toString());
-
-    // Emit signal
-    QVariantMap vMap = doc.object().toVariantMap();
-    emit priceJsonReceived(vMap);
-
-    m_reply->deleteLater();
-}
 
-void Prices::gotError() {
-    this->gotError("Unknown error");
+    m_scheduler.run([this, url] {
+        epee::net_utils::http::http_simple_client http_client;
+
+        const QUrl urlParsed(url);
+        http_client.set_server(urlParsed.host().toStdString(), urlParsed.scheme() == "https" ? "443" : "80", {});
+
+        const QString uri = (urlParsed.hasQuery() ? urlParsed.path() + "?" + urlParsed.query() : urlParsed.path());
+        const epee::net_utils::http::http_response_info* pri = NULL;
+        constexpr std::chrono::milliseconds timeout = std::chrono::seconds(15);
+
+        const bool result = http_client.invoke(
+            uri.toStdString(),
+            "GET",
+            {},
+            timeout,
+            std::addressof(pri),
+            {
+                {"Content-Type", "application/json; charset=utf-8"},
+                {"User-Agent", randomUserAgent().toStdString()}
+            });
+
+        if (!result)
+        {
+            this->gotError("unknown error");
+        }
+        else if (!pri)
+        {
+            this->gotError("internal error (null response ptr)");
+        }
+        else if (pri->m_response_code != 200)
+        {
+            this->gotError(QString("response code: %1").arg(pri->m_response_code));
+        }
+        else
+        {
+            QJsonDocument doc = QJsonDocument::fromJson({&pri->m_body[0], static_cast<int>(pri->m_body.size())});
+            if (doc.isEmpty())
+            {
+                this->gotError("bad JSON");
+            }
+            else
+            {
+                // Insert source url for later reference
+                QJsonObject docobj = doc.object();
+                docobj["_url"] = url;
+                doc.setObject(docobj);
+
+                QVariantMap vMap = doc.object().toVariantMap();
+                emit priceJsonReceived(vMap);
+            }
+        }
+    });
 }
 
-void Prices::gotError(const QString &message) {
+void Prices::gotError(const QString &message) const
+{
     qCritical() << "[Fiat API] Error:" << message;
     emit priceJsonError(message);
 }

src/qt/prices.h

@@ -3,28 +3,27 @@
 
 #include <QCoreApplication>
 #include <QtNetwork>
-#include <QNetworkAccessManager>
-#include <QNetworkReply>
-#include <QDebug>
+
+#include "FutureScheduler.h"
 
 class Prices : public QObject
 {
 Q_OBJECT
 public:
-    Prices(QNetworkAccessManager *networkAccessManager, QObject *parent = nullptr);
+    Prices(QObject *parent = nullptr);
+
+public:
+    Q_INVOKABLE void getJSON(const QString url) const;
+
+private:
+    void gotError(const QString &message) const;
 
-public slots:
-    Q_INVOKABLE void getJSON(const QString url);
-    void gotJSON();
-    void gotError();
-    void gotError(const QString &message);
 signals:
-    void priceJsonReceived(QVariantMap document);
-    void priceJsonError(QString message);
+    void priceJsonReceived(QVariantMap document) const;
+    void priceJsonError(QString message) const;
 
 private:
-    mutable QPointer<QNetworkReply> m_reply;
-    QNetworkAccessManager *m_networkAccessManager;
+    mutable FutureScheduler m_scheduler;
 };
 
 #endif // PRICES_H